package com.longruan.zmsys.common.utils;


import java.io.IOException;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 * 检测是否为移动端设备访问
 * @author 心一
 *
 */
public class CheckMobile {

	  // \b 是单词边界(连着的两个(字母字符 与 非字母字符) 之间的逻辑上的间隔),  
	    // 字符串在编译时会被转码一次,所以是 "\\b"  
	    // \B 是单词内部逻辑间隔(连着的两个字母字符之间的逻辑上的间隔)  
	    static String phoneReg = "\\b(ip(hone|od)|android|opera m(ob|in)i" 
	            +"|windows (phone|ce)|blackberry" 
	            +"|s(ymbian|eries60|amsung)|p(laybook|alm|rofile/midp" 
	            +"|laystation portable)|nokia|fennec|htc[-_]" 
	            +"|mobile|up.browser|[1-4][0-9]{2}x[1-4][0-9]{2})\\b";  
	    static String tableReg = "\\b(ipad|tablet|(Nexus 7)|up.browser" 
	            +"|[1-4][0-9]{2}x[1-4][0-9]{2})\\b";  
	     
	    //移动设备正则匹配：手机端、平板
	    static Pattern phonePat = Pattern.compile(phoneReg, Pattern.CASE_INSENSITIVE);  
	    static Pattern tablePat = Pattern.compile(tableReg, Pattern.CASE_INSENSITIVE);  
	       
	    /**
	     * 检测是否是移动设备访问
	     * 
	     * @Title: check
	     * @Date : 2014-7-7 下午01:29:07
	     * @param userAgent 浏览器标识
	     * @return true:移动设备接入，false:pc端接入
	     */
	    public static boolean check(String userAgent){  
	        if(null == userAgent){  
	            userAgent = "";  
	        }  
	        // 匹配  
	        Matcher matcherPhone = phonePat.matcher(userAgent);  
	        Matcher matcherTable = tablePat.matcher(userAgent);  
	        if(matcherPhone.find() || matcherTable.find()){  
	            return true;  
	        } else {  
	            return false;  
	        }  
	    }
	    
	    /**
	     * 检查访问方式是否为移动端
	     * 
	     * @Title: check
	     * @Date : 2014-7-7 下午03:55:19
	     * @param request
	     * @throws IOException 
	     */
	    public boolean check(HttpServletRequest request,HttpServletResponse response) throws IOException{
	        boolean isFromMobile=false;
	         
	        HttpSession session= request.getSession();
	    //检查是否已经记录访问方式（移动端或pc端）
	        if(null==session.getAttribute("ua")){
	            try{
	                //获取ua，用来判断是否为移动端访问
	                String userAgent = request.getHeader( "USER-AGENT" ).toLowerCase();  
	                if(null == userAgent){  
	                    userAgent = "";  
	                }
	                isFromMobile=CheckMobile.check(userAgent);
	                //判断是否为移动端访问
	                if(isFromMobile){
	                    System.out.println("移动端访问");
	                    session.setAttribute("ua","mobile");
	                } else {
	                    System.out.println("pc端访问");
	                    session.setAttribute("ua","pc");
	                }
	            }catch(Exception e){}
	        }else{
	            isFromMobile=session.getAttribute("ua").equals("mobile");
	        }
	         
	        return isFromMobile;
	    }

	}
	 





